ardour/livetrax
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Support pretty display of arbitrary plugin parameter units.

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Try e.g. fomp:cs_chorus1 which has Hz and ms controls.
This commit is contained in:
David Robillard 2014-11-02 01:59:18 -05:00
parent 47c4929bc2
commit d02d8337a9
3 changed files with 32 additions and 10 deletions
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1
libs/ardour/ardour/parameter_descriptor.h
View File

@ -101,6 +101,7 @@ struct ParameterDescriptor
}
std::string label;
std::string print_fmt; ///< format string for pretty printing
boost::shared_ptr<ScalePoints> scale_points;
uint32_t key; ///< for properties
Variant::Type datatype; ///< for properties

2
libs/ardour/ardour/value_as_string.h
View File

@ -56,6 +56,8 @@ value_as_string(const ARDOUR::ParameterDescriptor& desc,
// Odd, invalid range, just print the number
snprintf(buf, sizeof(buf), "%.0f", v);
}
} else if (!desc.print_fmt.empty()) {
snprintf(buf, sizeof(buf), desc.print_fmt.c_str(), v);
} else if (desc.integer_step) {
snprintf(buf, sizeof(buf), "%d", (int)v);
} else {

39
libs/ardour/lv2_plugin.cc
View File

@ -141,6 +141,7 @@ public:
LilvNode* ui_externalkx;
LilvNode* units_db;
LilvNode* units_unit;
LilvNode* units_render;
LilvNode* units_midiNote;
LilvNode* patch_writable;
LilvNode* patch_Message;
@ -1313,6 +1314,23 @@ LV2Plugin::get_property_descriptor(uint32_t id) const
return Plugin::get_property_descriptor(id);
}
static void
load_parameter_descriptor_units(LilvWorld* lworld, ParameterDescriptor& desc, const LilvNodes* units)
{
if (lilv_nodes_contains(units, _world.units_midiNote)) {
desc.unit = ParameterDescriptor::MIDI_NOTE;
} else if (lilv_nodes_contains(units, _world.units_db)) {
desc.unit = ParameterDescriptor::DB;
} else if (lilv_nodes_size(units) > 0) {
const LilvNode* unit = lilv_nodes_get_first(units);
LilvNode* render = lilv_world_get(lworld, unit, _world.units_render, NULL);
if (render) {
desc.print_fmt = lilv_node_as_string(render);
lilv_node_free(render);
}
}
}
static void
load_parameter_descriptor(LV2World& world,
ParameterDescriptor& desc,
@ -1324,6 +1342,7 @@ load_parameter_descriptor(LV2World& world,
LilvNode* def = lilv_world_get(lworld, subject, _world.lv2_default, NULL);
LilvNode* minimum = lilv_world_get(lworld, subject, _world.lv2_minimum, NULL);
LilvNode* maximum = lilv_world_get(lworld, subject, _world.lv2_maximum, NULL);
LilvNodes* units = lilv_world_find_nodes(lworld, subject, _world.units_unit, NULL);
if (label) {
desc.label = lilv_node_as_string(label);
}
@ -1336,15 +1355,17 @@ load_parameter_descriptor(LV2World& world,
if (maximum && lilv_node_is_float(maximum)) {
desc.upper = lilv_node_as_float(maximum);
}
load_parameter_descriptor_units(lworld, desc, units);
desc.datatype = datatype;
desc.toggled |= datatype == Variant::BOOL;
desc.integer_step |= datatype == Variant::INT || datatype == Variant::LONG;
if (lilv_world_ask(lworld, subject, _world.units_unit, _world.units_midiNote)) {
desc.unit = ParameterDescriptor::MIDI_NOTE;
} else if (lilv_world_ask(lworld, subject, _world.units_unit, _world.units_db)) {
desc.unit = ParameterDescriptor::DB;
}
desc.update_steps();
lilv_nodes_free(units);
lilv_node_free(label);
lilv_node_free(def);
lilv_node_free(minimum);
lilv_node_free(maximum);
}
void
@ -1577,11 +1598,7 @@ LV2Plugin::get_parameter_descriptor(uint32_t which, ParameterDescriptor& desc) c
desc.label = lilv_node_as_string(lilv_port_get_name(_impl->plugin, port));
desc.lower = min ? lilv_node_as_float(min) : 0.0f;
desc.upper = max ? lilv_node_as_float(max) : 1.0f;
if (lilv_nodes_contains(portunits, _world.units_midiNote)) {
desc.unit = ParameterDescriptor::MIDI_NOTE;
} else if (lilv_nodes_contains(portunits, _world.units_db)) {
desc.unit = ParameterDescriptor::DB;
}
load_parameter_descriptor_units(_world.world, desc, portunits);
if (desc.sr_dependent) {
desc.lower *= _session.frame_rate ();
@ -2280,6 +2297,7 @@ LV2World::LV2World()
ui_external = lilv_new_uri(world, "http://lv2plug.in/ns/extensions/ui#external");
ui_externalkx = lilv_new_uri(world, "http://kxstudio.sf.net/ns/lv2ext/external-ui#Widget");
units_unit = lilv_new_uri(world, LV2_UNITS__unit);
units_render = lilv_new_uri(world, LV2_UNITS__render);
units_midiNote = lilv_new_uri(world, LV2_UNITS__midiNote);
units_db = lilv_new_uri(world, LV2_UNITS__db);
patch_writable = lilv_new_uri(world, LV2_PATCH__writable);
@ -2293,6 +2311,7 @@ LV2World::~LV2World()
lilv_node_free(units_midiNote);
lilv_node_free(units_db);
lilv_node_free(units_unit);
lilv_node_free(units_render);
lilv_node_free(ui_externalkx);
lilv_node_free(ui_external);
lilv_node_free(ui_GtkUI);